FileVideoFormatter.php

<?php

namespace Drupal\file\Plugin\Field\FieldFormatter;

use Drupal\Core\Form\FormStateInterface;

/**
 * Plugin implementation of the 'file_video' formatter.
 *
 * @FieldFormatter(
 *   id = "file_video",
 *   label = @Translation("Video"),
 *   description = @Translation("Display the file using an HTML5 video tag."),
 *   field_types = {
 *     "file"
 *   }
 * )
 */
class FileVideoFormatter extends FileMediaFormatterBase {
  
  /**
   * {@inheritdoc}
   */
  public static function getMediaType() {
    return 'video';
  }
  
  /**
   * {@inheritdoc}
   */
  public static function defaultSettings() {
    return [
      'muted' => FALSE,
      'width' => 640,
      'height' => 480,
    ] + parent::defaultSettings();
  }
  
  /**
   * {@inheritdoc}
   */
  public function settingsForm(array $form, FormStateInterface $form_state) {
    return parent::settingsForm($form, $form_state) + [
      'muted' => [
        '#title' => $this->t('Muted'),
        '#type' => 'checkbox',
        '#default_value' => $this->getSetting('muted'),
      ],
      'width' => [
        '#type' => 'number',
        '#title' => $this->t('Width'),
        '#default_value' => $this->getSetting('width'),
        '#size' => 5,
        '#maxlength' => 5,
        '#field_suffix' => $this->t('pixels'),
        '#min' => 0,
        '#required' => TRUE,
      ],
      'height' => [
        '#type' => 'number',
        '#title' => $this->t('Height'),
        '#default_value' => $this->getSetting('height'),
        '#size' => 5,
        '#maxlength' => 5,
        '#field_suffix' => $this->t('pixels'),
        '#min' => 0,
        '#required' => TRUE,
      ],
    ];
  }
  
  /**
   * {@inheritdoc}
   */
  public function settingsSummary() {
    $summary = parent::settingsSummary();
    $summary[] = $this->t('Muted: %muted', [
      '%muted' => $this->getSetting('muted') ? $this->t('yes') : $this->t('no'),
    ]);
    $summary[] = $this->t('Size: %width x %height pixels', [
      '%width' => $this->getSetting('width'),
      '%height' => $this->getSetting('height'),
    ]);
    return $summary;
  }
  
  /**
   * {@inheritdoc}
   */
  protected function prepareAttributes(array $additional_attributes = []) {
    return parent::prepareAttributes([
      'muted',
    ])->setAttribute('width', $this->getSetting('width'))
      ->setAttribute('height', $this->getSetting('height'));
  }

}